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The Leadville Mill M1990-057 <br /> EXHIBIT U —DMO-EPP <br /> Page 14-6 <br /> 14.4.4 (D) COMPLIANCE <br /> The mill will be operated in compliance with County, State and Federal Regulations. <br /> 14.5 PROCESS CHEMICAL EVALUATION DEGIGNAr�n (SEC 6.4.21 (5)) <br /> 14.5. 1 (A) POTENTIAL TO AFFECT HUMAN HEALTH, PROPERTY OR ENVIRONMENT <br /> Listed process chemicals will be managed in accordance with MSHA requirements and <br /> as suggested in the Material Safety Data Sheets (MSDS) (Appendix 14-2). A chemical <br /> summary which may have the potential to affect human health and the environment <br /> is presented in Table 14-3. <br /> TABLE 14-3: DESIGNATED AND OTHER STORED CHEMICALS <br /> Chemical Handling Issues Potential Human Effects Potential Environmental <br /> Effects <br /> Flocculant • No hazardous ingredients • No acute toxicological effects • No known toxicity <br /> DAF-30(or equivalent) . Store in drums or bags. expected. <br /> • Store in well ventilated dry • Moderate skin and eye <br /> area. irritant. <br /> Hydrated Lime • Store in factory bags in dry • No acute toxicological effects • No known toxicity <br /> CaO place. expected. <br /> • Moderate skin and eye <br /> irritant. <br /> Sodium Cyanide • Signal Word: DANGER • Fatal is swallowed • Toxic to aquatic organisms <br /> NaCN . Wear PPE • Fatal in contact with skin • Soluble in water. Persistence <br /> • Use only under fume hood • Fatal if inhaled is unlikely bae on information <br /> • Do not breath dust • May cause respiratory available. <br /> • Do not get in eyes,skin or damage <br /> clothing • May cause drowsiness or <br /> • Do not eat or smoke when dizziness <br /> using product • Causes damage to organs <br /> • Use good hygiene • Causes damage to organs <br /> through prolonged or <br /> repeated exposure <br /> Sodium • Signal Word: WARNING • Harmful if swallowed • Soluble in water. Persistence <br /> BisulfateNaHS03 • Store in well ventilated place. • May cause respiratory is unlikely bae on information <br /> irritation available. <br /> Lead Nitrate • Use only under fume hood • Harmful if swallowed • Toxic to aquatic organisms <br /> Pb(NO3)2 • Use PPE • May cause respiratory,eye <br /> • Store in cool ventilated place or skin irritation <br /> Version 3.0 January 2021 <br />